I have the Saddleman Jumbo Slant bags on my bike.
They have a lot of room, and I have the stock Triumph saddlebag supports. I just use a 1/4 inch thick piece of plywood inside the bottoms for additional support. They work great and fit fine.

--Tom 02 TBA; 130 mains; TBS; Nology Coils&Wires;Unifilter/opened Airbox; -AI/snorkels; -2 baffles;Progressive 440s & Springs